Chapter 7 I/O Unit (IOU) Replacement 7-15
FIGURE 7-11 Metallic Chassis (IOU)
11. Touch each of the designated points on the guide blocks for 5 or more seconds
with your bare hand wearing the antistatic wrist strap.
FIGURE 7-12 Guide Block (IOU)
Touch for 5 or more seconds.
Touch 5 or more seconds.